Issues opening files created in 2.8 in 2.83
Actually, the problem with blender is that when you try to a file from an older version on a new version, or a file from a new version on an old version, blender sometimes doesn't find data that was present in the version the file was made in when trying to open on a different version. The best thing to do is open this file with 2.8 or tediously fix all the problems manually.
Hope it helps.